Brightness temperatures of the surface and atmosphere at 22-58 GHz on Polarstern cruise PS149

This data set contains daily files of atmospheric (PS149_uoc_hatpro_l1_tb_v01_2025*.nc) and surface (PS149_uoc_hatpro_l1_tb_sfc_v01_2025*.nc) brightness temperatures measured by the Humidity And Temperature PROfiler (HATPRO, Rose et al., 2005) onboard the research vessel Polarstern during cruies PS149 from 4 July to 29 August 2025. HATPRO measures brightness temperatures at seven channels between 22.24 and 31.4 GHz (water vapour absorption line, K-band) and at seven channels between 51.26 and 58 GHz (oxygen absorption complex, V-band). The instrument was mounted at the portside railing on one of the highest decks of Polarstern (lower Peildeck).